These entries are queried from radb.net using whois, you can try my project getting these.
:AS14607 route6: 2620:0:2810::/48 descr: OTA Management LLC descr: 1 Manhattanville Road descr: Purchase, NY 10577 US origin: AS14607 mnt-by: MNT-OLP changed: mhuff [at] ox.com 20110914 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:0:2810::/48 descr: OTA Management LLC 1 Manhattanville Road Purchase NY 10577, USA origin: AS14607 admin-c: NOC11142-ARIN tech-c: NOC11142-ARIN notify: noc [at] ox.com mnt-by: MAINT-AS14607 changed: noc [at] ox.com 20110913 #16:04:28Z source: RADB last-modified: 2023-11-13T15:41:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source